Y chromosome

The concept of “blending” as championed by such scholars as Aristotle and Hippocrates states that any trait that an offspring receives is the average of both of its parents. This concept was widely believed until Mendel’s experiments. Incomplete dominance occurs when the heterozygous phenotype is an intermediate between both of the homozygous genotypes. This concept is demonstrated best through the inheritance of petal color in a snapdragon. In a heterozygote the phenotype would be pink, a mix…

Chediak-Higashi syndrome is a Primary human immunodeficiency disease which is caused by genetic predisposition in an autosomal recessive pattern, where this describes any chromosome other than sex chromosomes where both pairs of the gene in each cell have underwent mutation. This disorder itself is a rare one, where about 200 cases of the condition have been reported worldwide. The parents of the person with this type of condition, autosomal recessive, carry one copy of the mutated gene, but…

Trisomy X Trisomy x syndrome, also known as triple x and 47xxx, is characterized by the presence of an extra x chromosome in each cell of a female. Three x chromosomes are present, rather than a normal pair in the nuclei of body cells. The first published report of a women with triple x syndrome was Patricia A. Jacobs at Western General Hospital in Edinburg, Scotland, in 1959. The condition occurs in about 1 in 1,000 newborn girls. Five to 10 girls with triple x syndrome are born in the united…

Domain: Eukarya Giant Pandas belong in this domain as they are composed of eukaryotic cells that have a specific task or function in the body. They are larger cells that possess membrane- bound nucleus and membranous organelles (including endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria). Like a prokaryotic cell, they also possess a plasma membrane, cytoplasm and ribosomes. Aksi giant pandas perform cell division through mitosis and reproduce sexually through meiosis.…

Progeria, otherwise known as Hutchinson-Gilford Progeria syndrome , is a rare disorder that causes children to age eight times faster than a normal person. This disease affect only 350 kids today. It was discovered by Jonathan Hutchinson in England in 1886 and was first called Progeria by Hastings Gilford. It was then named Hutchinson-Gilford Progeria syndrome. The name Progeria is taken from a Greek word that means "prematurely old". It is an autosomal recessive disorder, meaning that an…

Stickler Syndrome is a rare disease due to several mutations in certain types of genes that are involved in the formation of collagen. Collagen is an important building block of connective tissues, which is mostly effected throughout the body by Stickler Syndrome. This disease affects both male and female; the rate is at approximately one to three in every ten thousand births and one within every seventy-five hundred births. Investigators of this disease believe that Stickler Syndrome is very…

Osteopetrosis is a clinical syndrome characterized by the failure of osteoclasts to resorb bone. As a consequence, bone modeling and remodeling are impaired. The defect in bone turnover characteristically results in skeletal fragility despite increased bone mass, and it may also cause hematopoietic insufficiency, disturbed tooth eruption, nerve entrapment syndromes, and growth impairment. Researchers have described several major types of osteopetrosis, which are usually distinguished by their…

is arranged. One of their main function is to contribute/help with processes that involve cellular activities. One example of cell division where centriole plays a role in mitosis where the organelles creates spindle fibres. These fibers allow chromosomes to be separated from each during mitosis and the can create daughter cells. The centrioles play a key role…

Cri du chat Syndrome Cri du chat syndrome is an uncommon genetic condition that is caused by missing genetic material on chromosome 5. Specifically a part on the small arm (p) of chromosome 5 is absent. The disorder occurs in 1 in 20,000 to 50,000 live births according to the US National Library of Medicine. What causes this to happen is currently unknown. Cri du chat syndrome was first described in 1963 by French geneticist Jérôme Lejeune. He noticed that several of his patients…

processes and qualities allowing the cell cycle to operate effectively and efficiently. During the cell cycle, four stages occur known as G1 phase, S phase, G2 phase, & M phase. The G1 phase is where the cell is assigned to enter the process for chromosome duplication. DNA replication occurs in the S phase. The third phase, G2 phase, the process of mitosis triggering the alignment of the mitotic spindles. Mitosis and cytokinesis are two important functions that occur throughout the M phase. The…